1menu "DMA support" 2 3 4config SH_DMA 5 bool "SuperH on-chip DMA controller (DMAC) support" 6 depends on CPU_SH3 || CPU_SH4 7 default n 8 9config SH_DMA_IRQ_MULTI 10 bool 11 depends on SH_DMA 12 default y if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ 13 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7750R || \ 14 CPU_SUBTYPE_SH7751R || CPU_SUBTYPE_SH7091 || \ 15 CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7764 || \ 16 CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \ 17 CPU_SUBTYPE_SH7760 18 19config SH_DMA_API 20 depends on SH_DMA 21 bool "SuperH DMA API support" 22 default n 23 help 24 SH_DMA_API always enabled DMA API of used SuperH. 25 If you want to use DMA ENGINE, you must not enable this. 26 Please enable DMA_ENGINE and SH_DMAE. 27 28config NR_ONCHIP_DMA_CHANNELS 29 int 30 depends on SH_DMA 31 default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ 32 CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091 33 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ 34 CPU_SUBTYPE_SH7760 35 default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \ 36 CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724 37 default "6" 38 help 39 This allows you to specify the number of channels that the on-chip 40 DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the 41 SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6. 42 43config NR_DMA_CHANNELS_BOOL 44 depends on SH_DMA 45 bool "Override default number of maximum DMA channels" 46 help 47 This allows you to forcibly update the maximum number of supported 48 DMA channels for a given board. If this is unset, this will default 49 to the number of channels that the on-chip DMAC has. 50 51config NR_DMA_CHANNELS 52 int "Maximum number of DMA channels" 53 depends on SH_DMA && NR_DMA_CHANNELS_BOOL 54 default NR_ONCHIP_DMA_CHANNELS 55 help 56 This allows you to specify the maximum number of DMA channels to 57 support. Setting this to a higher value allows for cascading DMACs 58 with additional channels. 59 60config SH_DMABRG 61 bool "SH7760 DMABRG support" 62 depends on CPU_SUBTYPE_SH7760 63 help 64 The DMABRG does data transfers from main memory to Audio/USB units 65 of the SH7760. 66 Say Y if you want to use Audio/USB DMA on your SH7760 board. 67 68config PVR2_DMA 69 tristate "PowerVR 2 DMAC support" 70 depends on SH_DREAMCAST && SH_DMA 71 help 72 Selecting this will enable support for the PVR2 DMA controller. 73 As this chains off of the on-chip DMAC, that must also be 74 enabled by default. 75 76 This is primarily used by the pvr2fb framebuffer driver for 77 certain optimizations, but is not necessary for functionality. 78 79 If in doubt, say N. 80 81config G2_DMA 82 tristate "G2 Bus DMA support" 83 depends on SH_DREAMCAST 84 select SH_DMA_API 85 help 86 This enables support for the DMA controller for the Dreamcast's 87 G2 bus. Drivers that want this will generally enable this on 88 their own. 89 90 If in doubt, say N. 91 92endmenu 93